cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c

/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 *
 */
#include <linux/kthread.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <drm/drmP.h>
#include "amdgpu.h"
#include "amdgpu_trace.h"


static void amdgpu_job_timedout(struct amd_sched_job *s_job) { struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base); DRM_ERROR("ring %s timeout, last signaled seq=%u, last emitted seq=%u\n", job->base.sched->name, atomic_read(&job->ring->fence_drv.last_seq), job->ring->fence_drv.sync_seq); amdgpu_gpu_reset(job->adev); }

Contributors

PersonTokensPropCommitsCommitProp
Monk Liu5481.82%133.33%
Chunming Zhou710.61%133.33%
Christian König57.58%133.33%
Total66100.00%3100.00%


int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs, struct amdgpu_job **job, struct amdgpu_vm *vm) { size_t size = sizeof(struct amdgpu_job); if (num_ibs == 0) return -EINVAL; size += sizeof(struct amdgpu_ib) * num_ibs; *job = kzalloc(size, GFP_KERNEL); if (!*job) return -ENOMEM; (*job)->adev = adev; (*job)->vm = vm; (*job)->ibs = (void *)&(*job)[1]; (*job)->num_ibs = num_ibs; amdgpu_sync_create(&(*job)->sync); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Christian König12089.55%375.00%
Monk Liu1410.45%125.00%
Total134100.00%4100.00%


int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size, struct amdgpu_job **job) { int r; r = amdgpu_job_alloc(adev, 1, job, NULL); if (r) return r; r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]); if (r) kfree(*job); return r; }

Contributors

PersonTokensPropCommitsCommitProp
Christian König7597.40%266.67%
Monk Liu22.60%133.33%
Total77100.00%3100.00%


void amdgpu_job_free_resources(struct amdgpu_job *job) { struct dma_fence *f; unsigned i; /* use sched fence if available */ f = job->base.s_fence ? &job->base.s_fence->finished : job->fence; for (i = 0; i < job->num_ibs; ++i) amdgpu_ib_free(job->adev, &job->ibs[i], f); }

Contributors

PersonTokensPropCommitsCommitProp
Christian König4258.33%562.50%
Monk Liu2940.28%225.00%
Chris Wilson11.39%112.50%
Total72100.00%8100.00%


static void amdgpu_job_free_cb(struct amd_sched_job *s_job) { struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base); dma_fence_put(job->fence); amdgpu_sync_free(&job->sync); kfree(job); }

Contributors

PersonTokensPropCommitsCommitProp
Monk Liu2656.52%120.00%
Christian König1839.13%240.00%
Baoyou Xie12.17%120.00%
Chris Wilson12.17%120.00%
Total46100.00%5100.00%


void amdgpu_job_free(struct amdgpu_job *job) { amdgpu_job_free_resources(job); dma_fence_put(job->fence); amdgpu_sync_free(&job->sync); kfree(job); }

Contributors

PersonTokensPropCommitsCommitProp
Christian König3497.14%266.67%
Chris Wilson12.86%133.33%
Total35100.00%3100.00%


int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring, struct amd_sched_entity *entity, void *owner, struct dma_fence **f) { int r; job->ring = ring; if (!f) return -EINVAL; r = amd_sched_job_init(&job->base, &ring->sched, entity, owner); if (r) return r; job->owner = owner; job->fence_ctx = entity->fence_context; *f = dma_fence_get(&job->base.s_fence->finished); amdgpu_job_free_resources(job); amd_sched_entity_push_job(&job->base); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Christian König8873.95%660.00%
Monk Liu2924.37%330.00%
Chris Wilson21.68%110.00%
Total119100.00%10100.00%


static struct dma_fence *amdgpu_job_dependency(struct amd_sched_job *sched_job) { struct amdgpu_job *job = to_amdgpu_job(sched_job); struct amdgpu_vm *vm = job->vm; struct dma_fence *fence = amdgpu_sync_get_fence(&job->sync); if (fence == NULL && vm && !job->vm_id) { struct amdgpu_ring *ring = job->ring; int r; r = amdgpu_vm_grab_id(vm, ring, &job->sync, &job->base.s_fence->finished, job); if (r) DRM_ERROR("Error getting VM ID (%d)\n", r); fence = amdgpu_sync_get_fence(&job->sync); } return fence; }

Contributors

PersonTokensPropCommitsCommitProp
Christian König11292.56%872.73%
Junwei (Martin) Zhang75.79%218.18%
Chris Wilson21.65%19.09%
Total121100.00%11100.00%


static struct dma_fence *amdgpu_job_run(struct amd_sched_job *sched_job) { struct dma_fence *fence = NULL; struct amdgpu_job *job; int r; if (!sched_job) { DRM_ERROR("job is null\n"); return NULL; } job = to_amdgpu_job(sched_job); BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL)); trace_amdgpu_sched_run_job(job); r = amdgpu_ib_schedule(job->ring, job->num_ibs, job->ibs, job, &fence); if (r) DRM_ERROR("Error scheduling IBs (%d)\n", r); /* if gpu reset, hw fence will be replaced here */ dma_fence_put(job->fence); job->fence = dma_fence_get(fence); amdgpu_job_free_resources(job); return fence; }

Contributors

PersonTokensPropCommitsCommitProp
Chunming Zhou5946.83%523.81%
Christian König4434.92%1152.38%
Junwei (Martin) Zhang129.52%29.52%
Monk Liu75.56%29.52%
Chris Wilson43.17%14.76%
Total126100.00%21100.00%

const struct amd_sched_backend_ops amdgpu_sched_ops = { .dependency = amdgpu_job_dependency, .run_job = amdgpu_job_run, .timedout_job = amdgpu_job_timedout, .free_job = amdgpu_job_free_cb };

Overall Contributors

PersonTokensPropCommitsCommitProp
Christian König55565.91%2859.57%
Monk Liu16119.12%817.02%
Chunming Zhou9411.16%612.77%
Junwei (Martin) Zhang192.26%24.26%
Chris Wilson111.31%12.13%
Baoyou Xie10.12%12.13%
Nils Wallménius10.12%12.13%
Total842100.00%47100.00%
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